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Article type: Cover
Pages
Cover1-
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Article type: Index
Pages
A1-A48
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Shinichiro GOTO, Toshihisa MATSUSHIMA, Yoshinobu ARAI, Katsuhiko SAKAT ...
Article type: Article
Session ID: A-42
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Building the model for an experiment to study the water supply plumbing in the residence, we examined the flow performance of the plumbing system. Recently, as the pressure loss of the devices has a tendency to become big along with the high-grade of the equipment. We report about such a problem that be designed the practical condition of the plumbing system, on the basis of the data that was obtained from this experiment in this paper.
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Katsuhiko SAKATA, Shinichiro GOTO, Toshihisa MATSUSHIMA, Yoshinobu ARA ...
Article type: Article
Session ID: A-43
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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It is as we expressed with the 1^<st>-report that building the model for an experiment to study the water supply plumbing in the residence. Even the rest room that does not have the storage of water function is diffusing in the residence equipment, recently. We examined the flow performance on Loop piping system, as the pressure loss of the devices has a tendency to become big along with the high-grade of the equipment. We report about such a problem that be designed the practical condition of simultaneous use including the direct valve devices on Loop piping system in this paper.
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Takao FUJIWARA, Junichi ARAI, Toshihisa MATSUSHIMA, Shinichiro GOTO, Y ...
Article type: Article
Session ID: A-44
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Recently, the plastic pipe are used to the sprinkler fire equipment plumbing within the indoor of the apartment house a lot. Although the header-branching has been used to the piping heretofore, we are contributing to flow performance and installation improvement, by giving a loop-form to one part of piping. We experimented the flow performance, in the Polubutene piping that gave the loop-form of the diameter of 800 mm in this paper.
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Yoichi HAGA, Yukinobu YOKOTE, Tokio FUKUMOTO, Yoshikazu KAJIURA
Article type: Article
Session ID: A-45
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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It was clear from the result that an application of hydraulic test was tough to build down the pressure under remaining air in the piping and it was also difficult to detect water leakage. It is very important for making a remarkably accurate test conclusion by an application of hydraulic test to purge air from the pipe as much as possible. Air pressure test, hydraulic test and air pressure-type test equipment were performed to make a comparative study of micro leakage detection.
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Kazuki NISHIO, Shinichiro GOTO, Kenji ISHII, Toshihisa MATSUSHIMA
Article type: Article
Session ID: A-46
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In general galvanized steel pipe shall be applied for chilled and hot water piping system. 5 or 6 years after from application, water leakage from screw parts caused by pitting corrosion. The cause of pitting corrosion is assumed to be due to electric potential change of zinc and so on. In order to bring out when pitting corrosion is felled into occurring, water quality inspections were worked on after piping system flushing and monitoring pipes were sited in the system and checked 9 and 12 mouths after. From the result of inspections, we clarified that the number of times for flushing shall be snaked down, closed piping system shall be kept immediately after flushing and dissolved oxygen concentration for chilled and hot water shall be kept in 0.5mg/L and below.
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Kazushige Iijima, Masayuki OTUSKA, Takeshi AOI, [in Japanese]
Article type: Article
Session ID: A-47
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This study is aims to develop the vacuum toilet system for Business use incase of Building conversion. In this paper, authors discussed about Renewal plan of stock Building, drainage performance method, and result of primary performance test.
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Shinya KURANO, Masayuki OTUSKA, Takeshi AOI, Koshiro NAKAJIMA
Article type: Article
Session ID: A-48
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This Study focuses on the development of a horizontal branch pipe system that is designed to respond flexibly to the modification of water distribution of infill space. To be more specific, a new horizontal branch pipe system still adopts the conventional gravity drainage system while incorporating a force drainage system using a pressure pump, which flexibly responds to the extension and modification of infill drainage space. This paper also examines and evaluates the performance and practicality of this hybrid drainage system by using the pressure pump unit for water closets.
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Takeshi AOI, Masayuki OTUSKA, Koshiro NAKAJIMA
Article type: Article
Session ID: A-49
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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The study is aims to discuss about evaluation and design method of force drainage system using a pressure pump that enables free plan housing, In this paper, the authors examined the drainage performance by drainage pump units for bathtub units and grasped the influence on drainage capacity on drainage stack system with special fittings.
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Hiroyuki OHMORI, Goro SEKI, Kazumasa OHASHI, Takayoshi YOSHIOKA, Kimih ...
Article type: Article
Session ID: A-50
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This thesis proposes the technique to evaluate whether a renewal rest room in the office building. It is a rest room evaluation technique based on the idea of ERR (Energy consumption Reduce Rate). It can be judged whether effective or invalid to execute the renewal when it uses this evaluation technique. It was shown to apply to a real building, and to judge it.
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Hitoshi AKAI, Keiko NOCHI, Hiroyuki MORIBAYASHI, Masashi YAMAMOTO, Shi ...
Article type: Article
Session ID: A-51
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Recently there have been a lot of accidents by Legionella disease originated in bathtubs. Some point out the importance of facility management of circulation filtration system, hot spring storage tank, bathtubs etc. to prevent the accidents, as well as water quality management. This report shows comparison of eight kinds hot spring water quality change by sodium hypochlorite and chlorine dioxide, trichloroisocyanuric acid, and sodium dichloroisocyanurate addition. Free residual chlorine concentration and pH value, oxidation-reduction potential at the time of chlorine addition were investigated, and the relation of water quality was examined.
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Hiroyuki MORIBAYASHI, Keiko NOCHI, Hitoshi AKAI, Masashi YAMAMOTO, Shi ...
Article type: Article
Session ID: A-52
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this study, next examination was carried out following the first report. To begin with, consumption characteristic of each disinfectant was clarified in the hot spring water independence. Then, the appropriate disinfectant in hot spring water quality was selected. Next, the inactivation test of the Legionella by the disinfectant as an object was carried out. That necessary disinfectant concentration as the result for the inactivation of the Legionella in each hot spring waters was obtained came out.
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Takahito HISHIDA, Tetsuya KIMURA, Toshiaki SAITO
Article type: Article
Session ID: A-53
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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It is known that poor-maintained filter systems in public bath facilities cause the outbreak of Legionella.sp. Strong alkaline electrolyzed water damaged to Legionella and amoeba and disinfected them within 5 and 10 min in vitro. The new cleaning system of filters using strong alkaline electrolyzed water we invented contributes to facilitate sanitary management.
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Kaori TAGAMI, Keiko NOCHI, Hiroyuki MORIBAYASHI, Hiroyuki TSUDA, Fumit ...
Article type: Article
Session ID: A-54
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this experiment, quality was surveyed on the home circulation bathtub water. As the result, the Legionella was not detected from the bathtub water. There is disinfection position of this equipment at the back step of the Biofiltration tank. And, the heat cleaning is carried out in the Biofiltration tank. The frequency is 1 time for 2 weeks, and the temperature is 70℃. Next, the examination by the experimental equipment of the indoor scale was carried out. As the result, the sand filtration equipment did not remove the dissolved organics. The experiment using the active carbon will be carried out in future.
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Nobuharu MAEDA, Seishi OKADA, Hitoshi AKAI, Toru AONUMA, Hajime TUMURA ...
Article type: Article
Session ID: A-55
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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About an air bubble bathtub in a bathhouse institution and a supersonic wave bathtub, I observed behavior of remaining chlorine. I let an air bubble bathtub injected pressure air in a box and scatter mind with air from 2φ, a hole of 4φ. The supersonic wave bathtub injected air from a nozzle underwater. As a result, when the depth of the water was deepened as for the remaining chlorine, it became clear that there became little emission.
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Hirokazu SATO
Article type: Article
Session ID: A-56
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In order to recognize the hygienic status of central hot water supply system used in large-scale buildings, we investigated usage conditions and water quality. It was understood that maintenance of chlorine residuals in hot water is very difficult at the high temperature especially, and a decrease of chlorine residuals causes the microbial contamination such as Legionella or others.
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Hajime TSUMURAYA, Seishi OKADA
Article type: Article
Session ID: A-57
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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The density of the residual chlorine pays attention about hygienics notes when the case where water service cannot be supplied for this research at the earthquake, for example, the disaster is assumed, and water is used in a familiar building circumference in water based on the water service method and the building hygiene method to providing should the existence of 0.1mg/L or more. It aims to understand the behavior of along with the disappearance of the residual chlorine and the dissolved oxygen near oneself among certain Poritanc and PET bottle, and to propose it to do a sanitary securing.
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Keiko NOCHI, Msayuki OTSUKA, Hiroyuki TSUDA, Sinya NAKAMURA, Toshiyuki ...
Article type: Article
Session ID: A-58
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this study, management technique of water quality utilized for the roof replanting was examined. The summaries are as follows. As a result of storing the rainwater, the Legionella was detected in about 1 week. Then, the numerical value did not decrease of about 100 days. The disinfections test was carried out as bacterial contamination countermeasure of the rainwater in water tank. As the result, the method for using the chlorination jointly with the ultraviolet irradiation method was effective. The problem in this experiment was the elimination of the chlorine by the temperature rise of the tank water.
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Kesaji KOBAYASHI, Masayuki OTSUKA, Keiko NOTI, Masanobu YUZAWA, Takesh ...
Article type: Article
Session ID: A-59
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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The purpose of this study is to establish comprehensive verification method for rainwater recycling systems by using a 36-eyar-old laboratory of Kanto-Gakuin University. The report also discusses the effectiveness of the system through a 10-month operation in the light of the less use of supplied water by recycled rainwater. Meanwhile, the report describes the survey which was implemented to find the quality of recycled rainwater as well as clarifying points to bear in mind in the safe use of recycled rainwater.
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Hiroyuki KOSE
Article type: Article
Session ID: A-60
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Using geographic information system (GIS), the Kawagoe region in Japan was examined in the case in respect of the possibility of the rain water utilization in the region. Using the minute numerical information that land use of the every 10 meter mesh was recorded in 15 classification, rate of outflow, infiltration and reservation of rain water in every land use were calculated on the basis of building coverage ratio and literature data of discharge coefficient in two cases in the case in which the rain water tank is not founded and case in which it is installed. In addition, by dividing the Kawagoe region into 238 meshes in the 1km four every quarters, from totaling of each mesh of the land use point number, rate of outflow, infiltration and reservation of the every mesh were calculated. In the Kawagoe region, by the introduction of the rain water tank, the result showed that runoff control and utilization of the rain water for 48.7 million cubic meter/year (35.6% of outflow rate and 15.3% of all precipitation) were possible. Still, in this study, all rain water which fell in the roof was able to be stored, and again, all stored rain water was able to be utilized, they were calculated. In the future, it is necessary to carry out the detailed examination considering a size of the rain water tank and application of the rain water utilization, a balance of rain water infiltration and rain water utilization.
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Tsuyoshi FUNATO, Masataka HOSOYA, Dai NAKAMURA, Katsuhiro KAMITANI, Hi ...
Article type: Article
Session ID: B-15
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Research of the past about AEMS has reported the technique and its effect track record of AEMS for energy saving. Moreover, it also confirmed that it was the effective technique of being needed in order that this AEMS may promote energy saving. However, in order to realize energy saving further, it also turned out that some technical subjects occur. So, in this paper, the outline about the development towards utilization of AEMS which aimed at energy saving with effectiveness was described.
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Hiroshi TAKEI, Tomoaki MIYAZAKI, Hiroshi IWASAKI, Kazuyuki KAMIMURA
Article type: Article
Session ID: B-16
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This report shows the effect of energy saving for the buildings that include the optimum DHC-system, and look forward the spread of this system.
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Hideharu NIWA, Hideki YUZAWA, Katashi MATSUNAWA, Tomohiro KURIYAMA
Article type: Article
Session ID: B-17
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this paper "Urban Productivity / Energy Co-efficiency" defined based on a general idea of "factor" is discussed. And some examinations of index for assessment of "Urban Productivity / Energy Co-efficiency" are performed for whole cities and core areas of several cities. In this paper floor areas of buildings and population are adapted as the index of urban productivity. From the results of examinations it is shown that indexes for assessment are different between whole cities and core areas.
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Hideki YUZAWA, Hideharu NIWA, Tomohiro KURIYAMA, Katashi MATSUNAWA
Article type: Article
Session ID: B-18
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this paper "Coefficient of Energy Consumption for Urban Block (CEC-UB)" defined based on a general idea of "Coefficient of Energy Consumption (CEC)" that is used to restrict the energy performance of the building. As for CEC-UB, the energy performance of Urban Block is appreciable as the length of the building use time is considered. Three Urban Block was provisionally calculated, and the utility of CEC- UB was confirmed.
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Hiroyuki WATANABE, Noboru OSHIMA, Yuuji MIYAJIMA, Akira MAEYAMA, Masay ...
Article type: Article
Session ID: B-19
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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We investigate energy-saving performance and accuracy of HVAC Control System in heating period what apply to Otsuka Building. We get a result that HVAC Control System calculates energy consumption of an air condition system. In heating period, HVAC Control System brings a result that energy-saving performance is about 5%, and through the year, energy-saving performance is about 17%.
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Yuuji MIYAJIMA, Noboru OSHIMA, Hiroyuki WATANABE, Akira MAEYAMA, Masay ...
Article type: Article
Session ID: B-20
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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We have developed an Optimized HVAC Control System for Energy Saving. An earlier report demonstrated that the system does minimize the amount of energy consumed, but the system can also achieve an optimized evaluation function in terms of operating costs and power consumption. In this report, we performed trial calculations of the energy consumed in a building to assess the effects of varying the evaluation function. As a result of this analysis, we found that energy saving effects could be achieved when varying the optimized evaluation function of the air-conditioning system.
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Naoki AIZAWA, Takeshi WAKINO, Kuniharu SASAKI, Kenji FUJINO, Kanako IT ...
Article type: Article
Session ID: B-21
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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The building management system of the N building has operating data acquisition and analysis function to operate the building system, effectively. The simplified calorie calculation system was confirmed that the simplified calculation was sufficient to understand change of the cooling/heating calorific value and energy consumption for air-conditioning in the building. In this paper, for progress with accuracy of the simplified calorie calculation system, we measured the set valve of differential pressure on some air-handling-units, studied on the characteristics and analyzed the error factors. Moreover, we calculated calorie on some air-handling-units and examined way to be making progress in accuracy.
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Hiroki SATO, Kuniharu SASAKI, Kenji FUJINO
Article type: Article
Session ID: B-22
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Air-conditioning of a galley uses big energy by an amount of ventilation and air conditioning to be necessary by fuel consumption. I adopted the system which changed an amount of ventilation by existence of consumption of gas as energy-saving technique. By a variable system of an amount of ventilation, the energy conservation of a galley ventilation system was evaluated. From gas consumption and relations with an amount of ventilation, it was recognized that step-by-step setting was necessary for control of an amount of ventilation.
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Kenji KAYANUMA, Kouichi TAKESHITA, Noriaki IMORI
Article type: Article
Session ID: B-23
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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It has aimed to verify the effect of energy saving of NHK Kobe broadcasting station. First of all, the driving situation of the heat source machines was measured, and the load shifting ratio was requested. The use efficiency of the heat storage tank and the COP of the refrigeration machines were requested. Next, the amount of power consumption of the pump was measured, and the effect of conservation of energy of the VWV system was requested. At the end, the amount of power consumption of the air-conditioning fan was measured, and the effect of conservation of energy of the VAV system was requested.
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Yuki TAKEDA, Yasunori AKASHI, Shoichi ITO, Yukio HIRASA, Masahiro SHIN ...
Article type: Article
Session ID: B-24
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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We studied on the HVAC&R system for 2 years just after the building completion and consequently improved the system efficiency of the HVAC&R system. However, some problems, such as the trouble of the chiller and the performance deterioration of the water-water heat exchanger, recently have occurred and the system performance have been going down. This paper presents the energy consumption changes of the HVAC&R system in an office building completed 8 years ago and extracts problems on the operation in order to clarify the effect of energy savings if continuous energy management are carried out.
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Shoichi ITO, Yasunori AKASHI, Yuki TAKEDA, Yukio HIRASA, Masahiro SHIN ...
Article type: Article
Session ID: B-25
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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We need to clarify the effect of energy savings if continuous energy management are carried out to spread continuous energy management of the HVAC&R system. It is an effective method to calculate the effect of that with HVAC&R System Simulation Model. As a first step, in this paper, the accuracy of HVAC&R System Simulation Model is examined with the performance verification of the model by using measured data. And the increase of electrical consumption if problems in chillers are occurred is calculated.
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Goro SEKI, Kazumasa OHASHI, Osamu KIYOTA, Yuki Inaizumi, Takayoahi YOS ...
Article type: Article
Session ID: B-26
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This research is a proposal of the technique of the air harmony equipment easiness evaluation that aims to decrease the environmental burden in the office building. This report is a report that actually concerns the characteristic and the environmental burden of the data that the author used for the investigation and the analysis.
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Akemi TAGUCHI, Toru YAMAMOTO, Minoru TANAKA
Article type: Article
Session ID: B-27
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Building energy data which is recorded every day by BEMS(Building Energy Management System) and etc, should be used effectively. The present study proposes the classification of energy demand using by clustering method. In order to analyze the classification of energy demand, two factors are selected. First factor is the total demand volume, and second factor is the ratio of heat and electric power demand. By applying this method, classified energy demand was obtained in good accuracy and character of energy demand was carried out.
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Hideyuki GOTO, Yoshinari IWATA, Shoji YAJIMA
Article type: Article
Session ID: B-28
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In recent years, it is in the situation that the temperature-and-relative-humidity environment in the ordinary office in winter is not held healthfully, and the improvement of the low humidity environment has been a subject. It worked on performance diagnosis of the air-conditioning equipment in the design conditions of the time of completion, and an environmental remedy. In this paper, the simple technique using a psychrometric chart is proposed as the diagnostic technique of a humidification performance paying attention to the saturation efficiency of a humidifier.
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Hisato ODA, Hiromasa YAMAGUCHI, Masato MIYATA, Masaki SHIOYA, Takeshi ...
Article type: Article
Session ID: B-29
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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To HVAC system commissioning, one important work is to evaluate the performance of the cooling coil in an Air-Handling Unit. But the manual evaluation cost much time and labor. One solution is to predict the coil performance using simulation, but it is not clear whether the current available simulation models can give accurate results under various operational conditions. In this research a slit fin type coil was studied by conducting two series of experiments, one is about VAV system and the other is about CAV system respectively. And using the experiment data, the accuracy of seven simulation models was studied.
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Ryuichi NISHIDA, Shisei WARAGAI, Keisuke SEKIGUCHI
Article type: Article
Session ID: B-30
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Outdoor heat exchangers for air-cooled air-conditioners are exposed to the elements and thus tend to deteriorate very quickly. Because this equipment has such an enormous impact on the operating efficiency of air conditioners, it is essential to have a precise grasp of the extent heat exchangers have deteriorated in order to develop a standardized equipment upgrade and maintenance work schedule. Up to now we have had to rely on simple trial and error, but here we propose a new method for quantitatively diagnosing heat exchanger deterioration, assess the viability of developing the new method, and highlight the key issues that have to be addressed in developing the method.
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Takeshi IWAMOTO, Kyoji OTA, Kazuyasu GODA, Masaaki FUJII
Article type: Article
Session ID: B-31
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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We have been managing not only Building energy issue but Preservation & Maintenance of Building Equipments. Generally they tend to be interested in Building Energy Management than Preservation & Maintenance studies. Needless to say, We also have been saving consumption of electric power and water to use in own company. But the Preservation & Maintenance actually require a great deal of labor and more cost rather than Building Energy management. So we have made managing assistant system by Application soft ware (Relational Database: Microsoft ACCCESS) to lighten our burden throughout Preservation & maintenance studies.
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Shin-ichi TANABE, Keizo YOKOYAMA, Eisuke TOGASHI, Shin-ichi TAKAHASHI, ...
Article type: Article
Session ID: B-32
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This paper presents a method to develop HVAC equipment models with BMS data using Soft Computing. Four types of models are made and predicting performance are evaluated and compared to each other. First model is multiple regression model. Second is Neural Network model. Both third and fourth models are physical models from TRNSYS, widely known dynamic simulation program, but one's parameters are estimated by genetic algorithm and the others are estimated by experiment in laboratory. Electric power consumption of air-cooled chiller is predicted. Ratio of average error to rated power consumption is 5.7%, 4.6%, 3.8% and 14.3%, respectively.
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Taichi TANAKA, Shin-ichi TANABE, Shinsuke WATANABE, Eisuke TOGASHI, Hi ...
Article type: Article
Session ID: B-33
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Natrium-Sulfur energy storage system (NaS) is a new technology that provides load leveling. In this study, the electrical charge and discharge efficiency and other performance were computed from BMS data at Waseda Research Park Communication Center with a NaS system. Moreover, lost reduction effect by night shift and peak cut were calculated from the amount of charges and discharges. And the net present value was calculated based on the Discounted Cash Flow method.
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Kanta FUKUMORI, Shigeru MIYOSHI, Kenji YONEZAKI, Masafumi TERAWAKI
Article type: Article
Session ID: B-34
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This is a report of BEMS(Building Energy Management System), and it's introductory example. Measurement, operation, and management of energy are needed with the legal revision about energy conservation. Moreover, by having duty of carrying out a periodical report and a midium and longterm plan, introduction of BEMS is needed.
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Jeongsoo KIM, Shin-ichi TANABE, Hajime MATSUURA, Junta NAKANO, Makoto ...
Article type: Article
Session ID: B-35
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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This facilities were constructed as a freshwater fish garden aquarium in a river environmental paradise in Gifu Prefecture. It aimed at the ability to pull in more customers improvement and energy conservation, and it made it to the aquarium facilities where the building form combined with the exhibition space and the green engineering. The calorie at the air-conditioning period and the amount of use of water were analyzed according to the driving data.
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Makoto KITADA, Shin-ichi TANABE, Hajime MATSUURA, Junta NAKANO, Jeongs ...
Article type: Article
Session ID: B-36
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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Long term survey on natural ventilation system was conducted at fresh water aquarium with glass roof. Amount of natural ventilation and thermal environment at the exhibition space under glass roof were measured to evaluate the performance of natural ventilation system. The natural ventilation system exhausted the moisture and heat. Then, the temperature fell at the exhibition space under glass roof. The natural ventilation system saved air-conditioning energy and kept thermal comfort at the exhibition space under glass roof.
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Yusuke INABA, Yosiharu ASANO, Hideki TAKAMURA
Article type: Article
Session ID: B-37
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
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In this paper, the authors evaluated latent/sensible heating storage system in an aged facility. By means of simulation, we rsued quantities of solar radiation and loss heat. In addition, we investigated actual temperature in an aged facility. The following results were obtained; 1) By means of simulation, characteristics of a room have a big influence on quantities of solar radiation and loss heat. 2) In case of day with many quantities of insolation, room air temperature rises until the early afternoon. But, in case of the day with few quantities of insolation and the day that obstructed insolation, room air temperature becomes the highest temperature in morning.
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Kosuke YOSHII, Takashi INOUE, Masayuki ICHINOSE, Kazunori SHIROISHI
Article type: Article
Session ID: B-38
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In recent years, the various windows have been proposed and developed in order to realize both solar shading and ilization of daylight. However, the method which verifies those thermal performances is not established. This report shows the simplified method for measuring solar shading performance with the Peltier device box. Although there was room of an improvement, it was shown that the Peltier device box could measure almost the solar heat gain coefficient of a window system with high solar shading performance.
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Masato SASAKI, Takashi YANAI, Yoshiro HORI
Article type: Article
Session ID: B-39
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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A low storey building adopted Double-skin facade which reduce the energy consumption as an environmentally sustainable building. Double-skin facade advantages are rendering the occupant unconscious of the building's confinement and maximum utilization of natural lighting. Under Japanese climate, the double-skin glass is required to satisfy various ctions such as the discharge of heated air between the glasses in the summer, the thermal insulation in the winter and the natural ventilation in spring and autumn. In this study, we report the thermal performance of Double-skin glass by the field measurement.
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Takuro KIKUCHI, Masaaki HIGUCHI
Article type: Article
Session ID: B-40
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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Double-skin or Airflow facades are often adopted as a thermal engineering technique as well as an aesthetic design technique. There are indoor air and outdoor air as supply sources of the ventilation air. The natural ventilation method with tdoor-air and the cascade use method with indoor exhaust-air are reasonable methods that don't need additional fans. In order to prepare useful datasets for design of double-skin facades, the thermal performance of both methods was evaluated with use of the steady macro-model.
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Athasit JITTAWIKUL, Yoko NOBATA, Kunihiko KITAMURA, Osamu ISHIHARA
Article type: Article
Session ID: C-52
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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"Great Cooling Tower" which is over 150% larger than a standard was newly developed. This feature can lower circulating cooling water temperature, so that COP (coefficient of performance) of a turbo refrigerator can be improved well. Fan power in the Great Cooling Tower is designed to be as nearly as a standard-type level. Furthermore, to reduce transportation power, more than 5 degrees Celsius of temperature difference of cooling water was set deliberately. This report shows that, in order to maximize the system COP of the Great Cooling Tower system, the most suitable cooling water temperature was examined properly.
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Akinori TAKEYASU, Hiroshi IMAOKA, Kunihiko KITAMURA, Osamu ISHIHARA
Article type: Article
Session ID: C-53
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In this report, the effect when set temperature difference of cooling water over 5 degrees Celsius and the economic performance of the Great Cooling Tower system were examined. In comparison with a standard-type cooling tower system, power cost of a turbo refrigerator on the Great Cooling Tower system had gone down, but increasing cost of a Great Cooling Tower had made the total construction cost to be risen finally. However, as a result, it is clear that the economic performance of Great Cooling Tower appeared especially with an inverter turbo refrigerator.
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Hiromasa YAMAGUCHI, Hideharu NIWA, Mitsuki MIURA, Daisuke NARUMI, Kazu ...
Article type: Article
Session ID: C-54
Published: September 05, 2006
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
FREE ACCESS
The water spraying device set up in air-conditioning outdoor machine decreases the condensing pressure of the compressor by the effect of the evaporation cooling of the water. As a result, it induces some effects - the high-pressure cutting prevention, the improvement in efficiency, and the energy conservation at the peak cooling load. In this article, by the measurement in the operating state, the effect of energy conservation of the air source heat pump chiller by water spraying is verified. Moreover, the influence that difference of method and water volume give to efficiency of water spraying is verified.
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